avfoundation

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Knowing resolution of AVCaptureSession's session presets

I\'m accessing the camera in iOS and using session presets as so: captureSession.sessionPreset = AVCaptureSessionPresetMedium;[详细]

2023-04-13 06:02 分类：问答
Having trouble creating UIImage from CIImage in iOS5

I\'m using the AVFoundation framework. In my sample buffer delegate I have the following code: -(void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuf[详细]

2023-04-13 05:09 分类：问答
AVFoundation iOS 5

My apps runing on the appstore are using mp3 and video files that don\'t work since iOS5 update. I\'ve installed xcode 4.2 and...[详细]

2023-04-13 01:11 分类：问答
In iOS 5, after the category changed, "AudioQueueStart" used 3 ~ 5 seconds to start recording

After I changed AudioSession\'s category from kAudioSessionCategory_MediaPlayback to kAudioSessionCategory_PlayAndRecord, the AudioQueueStart method hanged on about 3 ~ 5 seconds to start recording.[详细]

2023-04-13 00:35 分类：问答
Reopening AVCaptureSession

I have an application which takes some pictures. My whole application is开发者_Go百科 based on the AVCam sample code from WWDC 2010.[详细]

2023-04-12 22:40 分类：问答
Automatic Retain Count, AVFoundation: Dictionary containing non objective C objects. How do do this with ARC?

I am actually converting some of my source files to ARC. ARC is very nice, saves time and memory leaks. Actually I\'m trying to convert my AVFoundation code and reached my limits at one very special l[详细]

2023-04-12 05:55 分类：问答
AVAudioPlayer stops playing immediately with ARC

I am trying to play an MP3 via AVAudioPlayer which I thought to be fairly simple. Unfortunately, it\'s not quite working. Here is all I did:[详细]

2023-04-12 02:02 分类：问答
Audio controls in lock screen iPhone, iPad

I 开发者_如何转开发use AVFoundation to play audio. When i lock my device with playing music, and press Home button twice, I can see audio controls: forward, rewind, pause/play and volume slider[详细]

2023-04-11 18:25 分类：问答
Faster still image capture with AVFoundation

I use some code to capture still images from the camera. With my iPad2, it grabs 30 frames per second without any trouble, 开发者_C百科but with the iPhone4 only around 4 fps before the imagebuffer get[详细]

2023-04-11 14:46 分类：问答
AVAssetExportSession progress gets stuck on ipad but not on simulator

This piece of code works fine on the simulator. However, when I try to run the export on my iPad, it always hangs at progress value 0.14583-ish. Can somebody help me figure out why? been stuck on this[详细]

2023-04-11 14:05 分类：问答